Radiant Capital was attacked and lost more than $51 million on Arbitrum and BNB Chain

According to security company Ancilia, the full-chain currency market Radiant Capital was hacked and lost more than $51 million. The attack initially occurred on Arbitrum and then moved to BNB Chain. The attacker's wallet currently holds more than $32 million in Arbitrum assets and about $18 million in BNB Chain tokens, with its largest holdings being ETH derivatives wstETH and weETH. According to Ancilia, a backdoor contract was deployed around 17:09 UTC on Wednesday, allowing the attacker to gain unauthorized access and begin transferring tokens. "Ethereum and Base deployments appear to be safe, but we remind anyone to be careful when interacting with these contracts at this time," Tony Ke, head of security research at Fuzzland, said in an interview. Ke said Radiant uses a multi-signature setup to control smart contracts, but it seems to have been compromised internally. The attack profile suggests that someone was phished, or the computer was compromised, or an internal attacker caused Radiant's private key to be leaked. Users are advised to revoke all relevant contract authorizations immediately. Radiant lost about 1,900 ETH, worth $4.5 million, in a flash loan attack earlier this year. (The Block)